MESON Chess Problem Database
Problem Display
PID: 240601 (5NK1/r1R5/4P1B1/3qp3/5kPB/1p3p1P/b4N2/4R3 w - - 0 1)
Hoffmann, Fritz
Thema Danicum, 1987
#2
10 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qe4
- 2.Rxe4#
- 1...Qc6
- 2.Sd3#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qb7
- 2.Sd3#
- 1...Qa8
- 2.Sd3#
- 1...Qd1
- 2.Re4#
- 1...Qd2
- 2.Re4#
- 1...Qd3
- 2.Sxd3#
- 1...Qa5
- 2.Sd3#
- 2.Re4#
- 1...Qb5
- 2.Re4#
- 1...Qc5
- 2.Sd3#
- 2.Re4#
- 1...Qd6
- 2.Re4#
- 1...Qd7
- 2.Re4#
- 1...Qd8
- 2.Re4#
- 1...Ra3
- 2.Rf7#
- 1...Ra4
- 2.Rf7#
- 1...Ra5
- 2.Rf7#
- 1...Ra6
- 2.Rf7#
- 1...Ra8
- 2.Rf7#
- 1...Qe4
- Tries
- 1.Se4?
- threat
- 2.Bg3#
- 2.Bg5#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qxe4
- 2.Rxe4#
- 1...Qd8
- 2.Bg3#
- 1...f2!
- threat
- 1.Bb1?
- threat
- 2.Sg6#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qe4
- 2.Rxe4#
- 1...Qa8
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Qd8
- 2.Re4#
- 1...Ra8
- 2.Rf7#
- 1...Bxb1!
- threat
- 1.Bd3?
- threat
- 2.Sg6#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qxd3
- 2.Sxd3#
- 1...Qe4
- 2.Rxe4#
- 1...Qd8
- 2.Re4#
- 1...Ra8
- 2.Rf7#
- 1...Qa8!
- threat
- 1.Be4?
- threat
- 2.Sg6#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qxe4
- 2.Rxe4#
- 1...Qa8
- 2.Sd3#
- 1...Ra8
- 2.Rf7#
- 1...Qd8!
- threat
- 1.Bf5?
- threat
- 2.Sg6#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qa8
- 2.Sd3#
- 1...Qd8
- 2.Re4#
- 1...Ra8!
- threat
- 1.Bh5?
- threat
- 2.Sg6#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qe4
- 2.Rxe4#
- 1...Qa8
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Qd8
- 2.Re4#
- 1...Ra8
- 2.Rf7#
- 1...Bb1!
- threat
- 1.Bh7?
- threat
- 2.Sg6#
- 1...Qxe6+
- 2.Sxe6#
- 1...Ra8
- 2.Rf7#
- 1...Qe4
- 2.Rxe4#
- 1...Qa8
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Qd8
- 2.Re4#
- 1...Bb1!
- threat
- 1.Be8?
- threat
- 2.Sg6#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qe4
- 2.Rxe4#
- 1...Qd3
- 2.Sxd3#
- 1...Bb1!
- threat
- 1.Se4?
- Keys
- 1.Bc2!
- threat
- 2.Sg6#
- 1...Qxe6+
- 2.Sxe6#
- 1...Qe4
- 2.Rxe4#
- 1...Qa8
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Qd8
- 2.Re4#
- 1...Ra8
- 2.Rf7#
- threat
- 1.Bc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 11
- Sets
- Q(e);N_GUARD,N_PINP(F)::R1(A),XQ(e)
- Q(e);N_GUARD,N_PINP(F)::S(B)
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::S(B)
- Q(e);N_GUARD,N_PINP(F)::R1(A)
- Q(e);N_GUARD,N_PINP(F)::S(B),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::R1(A)
- R(g);N_GUARD::R(H)
- R(g);N_GUARD,P_PINS(I)::R(H)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- Q(e);N_PINP(F),OGATE,XS(B)::R1(A),XQ(e)
- Q(e);N_PINP(F),P_PINS(I)::B(E)
- Refutation
- P(c);
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- Q(e);N_GUARD,N_PINP(F)::R1(A),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::S(B)
- Q(e);N_GUARD,N_PINP(F)::S(B),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::R1(A)
- R(g);N_GUARD,P_PINS(I)::R(H)
- Refutation
- B(a);XB(G)
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- Q(e);N_PINP(F),XB(G)::S(B),XQ(e)
- Q(e);N_GUARD,N_PINP(F)::R1(A),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::R1(A)
- R(g);N_GUARD,P_PINS(I)::R(H)
- Refutation
- Q(e);N_PINP(F),P_PINS(I)
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- Q(e);N_PINP(F),OGATE,XB(G)::R1(A),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::S(B)
- R(g);N_GUARD,P_PINS(I)::R(H)
- Refutation
- Q(e);N_PINP(F),P_PINS(I)
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::S(B)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::R1(A)
- Refutation
- R(g);P_PINS(I)
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- Q(e);N_GUARD,N_PINP(F)::R1(A),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::S(B)
- Q(e);N_GUARD,N_PINP(F)::S(B),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::R1(A)
- R(g);N_GUARD,P_PINS(I)::R(H)
- Refutation
- B(a);
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- R(g);N_GUARD,P_PINS(I)::R(H)
- Q(e);N_GUARD,N_PINP(F)::R1(A),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::S(B)
- Q(e);N_GUARD,N_PINP(F)::S(B),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::R1(A)
- Refutation
- B(a);
- Try
- B(G);
- Threat
- S(I)
- Vars
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- Q(e);N_GUARD,N_PINP(F)::R1(A),XQ(e)
- Q(e);N_GUARD,N_PINP(F)::S(B),XQ(e)
- Refutation
- B(a);
- Try
- Actual
- B(G);
- Threat
- S(I)
- Vars
- Q(e);CHECK,XP(F)::S(I),XQ(e)
- Q(e);N_GUARD,N_PINP(F)::R1(A),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::S(B)
- Q(e);N_GUARD,N_PINP(F)::S(B),XQ(e)
- Q(e);N_GUARD,N_PINP(F),P_PINS(I)::R1(A)
- R(g);N_GUARD,P_PINS(I)::R(H)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).